Technical Data Sheet
115.2Kbit/s Infrared Transceiver
TM3202/TR2
Features
․Excellent
Fluorescent Noise Immunity and Very
High EMI Immunity
․Smart
IOVCC input allows flexible low voltage
(<1.8V) logic interfacing.
․Wider
Vcc operation rang: 2.4~5.0V
․Ultra
Small Surface Mount Package:
-
L8.0mm * W3.0mm * H2.5mm
․Operating
Temperature Range : -25℃ to 85℃
․LED
Drive Current : 32mA Typical
․Low
Shutdown Current : 0.01uA Typical
․Few
External Components Required
․Pb-free
․The
product itself will remain within RoHS compliant version.
Descriptions
The TM3202/TR2 is a new generation of
low-cost infrared transceiver modules. The module is
in ultra-small surface mount package. Although the
operating voltage can range from 2.4 to 5.0 Volts, the
LED drive current is internally compensated to a
constant 32mA to assure that link distances meet the
low power standard of IrDA 1.3 physical layer
specification. It is designed to interface to
input/Output logic circuits as low as 1.8V.
Applications
․PDA
․Digital
Still and Video Cameras
․Handheld
Battery Operated Products, ex: Handheld Printers
․Electronic
wallet
․Mobile
Telecommunication
Everlight Electronics Co., Ltd.
Device No: DTM-322-001
Http://www.everlight.com
Prepared Date: 07-21-2005
Rev 2
Page: 1 of 11
Prepared By: Stephen Wang
TM3202/TR2
Package Dimensions
MOUNTING
CENTER
4
1.075
2.15
RECEIVER
C
L
DP 0.05mm(2x)
0.85
0.45
EMITTER
0.35
1.175
0.85
2.85
1.05
1.25
2.55
8
0.8
0.75
0.35
3.1
1.95
3
3.5
DP 0.15mm(2x)
0.5(2x)
UNIT:mm
TOLERANCE:± 0.2mm
COPLANARITY:0.1mm MAX.
C
L
0.35
1.65 1.35(2x)
0.6
0.35
2.55
0.6
1.1
6.65
3.325
0.1
PIN1
Everlight Electronics Co., Ltd.
Device No: DTM-322-001
Http://www.everlight.com
Prepared Date: 07-21-2005
Rev 2
Page: 2 of 11
Prepared By: Stephen Wang
TM3202/TR2
Device Selection Guide
Low Power
Mode
Low Power
TM3202/TR2
Link
Distance
>20cm
Angle
2θ1/2
+/-15
+/-30
Standard
Link
Distance
>30cm
Angle
2θ1/2
+/-15
+/-30
λ
p
850~900
nm
Operating
Voltage
(Vcc)
2.4~5.0
Volts
Data Rate
2.4k~115.2
kbps
Functional Block Diagram
LEDA
8 VLEDA
TXD
7 TXD
LED
Current
Source
RXD
6 RXD
SHUT DOWN
5 SD
SHIELD
4 AGND
Vcc
C
2
0.1uF
3 Vcc
IOVcc
C1
0.1uF
2 IOVcc
1 GND
Note:Outlined components are optional depending on the quality of the power supply.
Component
Recommended Value
C1
0.1uF(Ceramic). It must be placed within 1.0cm of the TM3202/TR2
C2
0.1uF(Ceramic). It must be placed within 1.0cm of the TM3202/TR2
Everlight Electronics Co., Ltd.
Device No: DTM-322-001
Http://www.everlight.com
Prepared Date: 07-21-2005
Rev 2
Page: 3 of 11
Prepared By: Stephen Wang
TM3202/TR2
Pin Descriptions
Pin Symbol
1
2
3
4
5
6
7
8
-
GND
IOVcc
Vcc
AGND
SD
RXD
TXD
LEDA
Shield
Function
Ground
Input/Output
ASIC Vcc
Description
Connect to system ground
Connect to ASIC logic controller Vcc voltage.
Note:1
I/O Active
Supply Voltage Supply Voltage from 2.4 to 5.0 Volts.
Analog Ground Connect to a “quiet” ground.
Shut Down
Receiver Data
Output
Must be driven either high or low. Do Not float the
pin.Note:2
Output is a low pulse for 1.6us when a light pulse
is seen.Note:3.4
O
I
High
Low
High
Transmitter Data Logic High turn on the IrLED. Note:5,6
Input
IrLED Supply
Voltage
EMI Shield
IrLED Supply Voltage from 2.0 to 9.0 Volts.
Connect to system ground via a low inductance
trace. For best performance,
don’t connect to GND or AGND directly at the
device.
TRANSCEIVER I/O Truth Table
The LED and RXD outputs are controlled by the combination of the TXD and SD pins and light
falling on the receiver.As shown in the table below,the transmitteris non-inverting ;the LED is on
when the TXD pin is high and off when TXD is low.The receiver is inverting;the RXD pin is low
during IrDA signal pulses and high when the receiver does not see any light.When shutdown(SD
pin high),the LED is off (the state of the TXD pin does not matter),and the RXD pin is pulled high
with a weak internal pullup.
SD
Low
High
TXD
High
Low
Don’t care
LED
On
Off
Off
Receiver
Don’t care
IrDA Signal
No Signal
Don’t care
RXD
Not Valid
Low
High
High
Everlight Electronics Co., Ltd.
Device No: DTM-322-001
Http://www.everlight.com
Prepared Date: 07-21-2005
Rev 2
Page: 4 of 11
Prepared By: Stephen Wang
TM3202/TR2
Absolute Maximum Ratings (Ta=25
℃
)
reference point Pin GND unless otherwise noted.
Typical values are for DESIGN AID ONLY, not guaranteed nor subject to production testing.
Parameters
Supply Voltage
Input/Output Voltage
IrLED Supply Voltage
Receiver Data Output
Transmitter Data Input
Shut Down
Operating Temperature Range
Test Conditions
All States
All States
SD=0, TXD=IOVcc
Vcc=0~7V, TXD=0
All States
All States
All States
Symbol
Vcc
IOVcc
V
LEDA
V
LEDA
RXD
TXD
SD
Tamb
Min.
-0.5
-0.5
-0.5
-0.5
-0.5
-0.5
-0.5
-25
Typ.
Max.
7
7
9
9
IOVcc +0.5
IOVcc +0.5
IOVcc +0.5
+85
Unit
V
V
V
V
V
V
V
℃
℃
℃
Storage Temperature Range
Soldering Temperature
Parameters
Operating Temperature Range
Supply Voltage
Input/Output Voltage
TXD Input Threshold
SD Input Threshold
Receiver Date Rate
Vcc to GND
IOVcc to GND
IOVcc≧1.8V
IOVcc≧1.8V
IOVcc≧1.8V
IOVcc≧1.8V
Tstg
See Recommended
Solder Profile
Test Conditions
Symbol
Tamb
Vcc
IOVcc
VIh
VIl
VIh
VIl
-40
100
260
Recommended Operating Conditions
Min.
-25
2.4
1.8
2/3 IOVcc
0
1
0
2.4
Typ.
Max.
+85
5.0
Vcc
IOVcc
1/3 IOVcc
Vcc
0.9
115.2
Unit
℃
V
V
V
V
V
V
kbps
Everlight Electronics Co., Ltd.
Device No: DTM-322-001
Http://www.everlight.com
Prepared Date: 07-21-2005
Rev 2
Page: 5 of 11
Prepared By: Stephen Wang
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